Michelin B1 Aircomp tubes are a great choice for both competitive riding and training. They feature and ultralight butyl rubber compound that delivers fantastic results for all riders. Available in 650x18/23 with 36mm, 52mm and 60mm smooth valve stems.

Now anyone can get the advantage of our remarkably light "Service Courseﾙ" ultralight butyl tubes. The combination of the Aircompﾮ Ultra-light tube's extremely lightweight and consistent Michelin quality make these an obvious choice for high performance applications.